The answer has to do with the air we breathe and that bright white snowpack, as an atmospheric scientist in Colorado explains.
Space scientists say they have spotted a hilly landscape that looks like spiderwebs on the Red Planet.
Photos from over the last five years show some of the space oddities it has spotted in its exploration of the Red Planet.
The results offer a new window into how iceâgiants distribute energy in their upper layers.
A study by Italian scientists has demonstrated the existence of an empty lava tube in the depths of Venus.
Mars was a blue planet around three billion years ago, according to new research.
Scientists say the unusual formation is the result of a meteorite impact.
Astronomers said planet PSR J2322-2650b appears to have an exotic helium-and-carbon-dominated atmosphere unlike any ever seen before.
Astronomers say the "huge" new world is six times the size of Jupiter.